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Arylzinc Reagents (arylzinc + reagent)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Highly efficient catalytic system for electrophilic amination of arylzinc reagents

APPLIED ORGANOMETALLIC CHEMISTRY, Issue 1 2010
Tahir Da, kapan
Abstract The effect of catalyst on the yield of amine in the amination of three classes of arylzinc reagents with acetone oxime O -tosylate was investigated. Since they allowed the preparation of arylamines in excellent yields in the presence of a minimum amount of copper (I) or copper (II) compounds, the catalytic systems using copper (I) or copper (II) combined with a P-, N- or S-donor ligand were revealed to be the best catalysts for the electrophilic amination of arylzinc reagents with acetone oxime O -tosylate in the presence of DMPU. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Cosolvent-promoted electrophilic amination of organozinc reagents

APPLIED ORGANOMETALLIC CHEMISTRY, Issue 6 2009
Tahir Da, kapan
Abstract In this study, we aimed to develop a simple and efficient method for the electrophilic amination of organozinc reagents. For this reason, 12 cosolvents were screened in the electrophilic amination of ordinary organozinc reagents. By the use of a cosolvent, an easily applicable and high-yielding method for the preparation of arylamines by electrophilic amination of arylzinc reagents was developed. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Structure,Reactivity Relationships in Negishi Cross-Coupling Reactions

CHEMISTRY - A EUROPEAN JOURNAL, Issue 1 2010
Zhi-Bing Dong Dr.
Abstract Competition experiments have been performed to determine the relative reactivities of substituted bromobenzenes and of different arylzinc reagents in the [Pd(PPh3)4]-catalyzed Negishi cross-coupling reaction in THF at 25,°C. The cross-coupling reactions are accelerated by electron acceptors in the bromobenzenes, the effect of which increases in the order ortho [source]